Improvement in ore-pulverizers



F. C. MORSE.

Ore M111.

Patented Oct. 25, 1870.

IJEYIRS, FHGTo-u'mmmman, wAsmuGma i] c one song patent @iiiiirr.

Letters Patent No. 108,617, was October 25, 1870.

lMPROVEMENT IN ORE-PULVERIZERS.

The fichedule referred to in these Letters Patent and making part of the same.

To all whom it may concern.-

Be it known that I, FREDERICK O. Monsn, of Buckskin, in the county of Pork and Territory of Colorado, have invented a. new and improved Ore- Pnlverizer; and I do hereby declare that the foilowin g is a. full, clear, and exact description thereof, which will enable others skilled in the art to make and use the some, reference being had to the accompanying drewipg forming part of this specification. I

Figure 1 represents a vertical longitudinal section of my improved ore-pnlverizer.

Figure 2 is a. plan or top view of the some.

Similar letters of reference indicate corresponding ports.

This invention relates to an improved arrangement of the grinding-stones in an ore-pnlverizer, or s new method of hanging them, and consists in providing theconvex bedstone with a. step, on the end of which the driver of the upper or rotary concave stone is placed. 7

A and Bin the drawing are the two grinders, which constitute my pnlverizer. They are made of stone or other suitable material, and their grinding SiH'fitBBS may be barred in the usual manner or otherwise pre pared at will.

The lower fixed grinder A is made with a conical grinding surface so as to be higher in the middle than at the edges, as shown.

The upper rotary grinder B, which may he made of one or more pieces, as desired, has its grinding surface conceive to correspond with the shape of the lower grinder.

The ore to be pulverized is inserted between the grinders through a. central opening of the upper grinder.

D is at step inserted in the stone A at its center. On this the driver E is set, its lower end being recessed for the purpose. At the upper end it is erranged in suitable supports, and its horizontal arms at eprojeet into recesses erpotches in the stone 18; thus motion being imported to the driver by means of a hand and policy, or other menus, the stone B- wiii he rotated.

This arrangement is simple, inexpensive, and adapted to facilitate removal of the upper stone to receive it new dressing, or for other purposes.

The apparatus is intended more particularly for gold ores, and will give an opportunity of removing the srnsil particles oi gold from the pulp as soon as they become separated, preventing their being ground any finer than natural size. 7

On the ordinary fiat grinders the ore is exposed fortoo long it time to the action of the grinders, and its metallic contents are therefore ground or crushed.

I propose to arrange two or more sets of grinders on one apparatus, each set being somewhat higher than the other, as indicated in fig. 1.

The ore is first ground by the highest pair of stones, and is then carried to the next lower pair in a trough, G.

The separated metal is retained by the amalgamating plates immediately after leaving the grinders,

In this manner complete separation without unnecessary labor is produced.

Another advantage of my invention is the scouring and hurnishing of the motel and the consequent cleaning of the some.

Having thus described my invention,

I eisim as new, and desire to secure by Letters Pot The arrangement with the stationary convex hedstone A nnd rotery concave stone B, of the step I) and driver it, provided with arms a a, all as shown and described.

FEEDERIOK O. MORSE. Witnesses Assrnm HALL, J. R. Fos'rnn. 

